Movable-chair desk



W. SMILEY. IvIovABLE CHAIR DESK. APPLICATION FILED IEB. I1. 192|.

Patented May 16, 1922.

2 SHEETS-SHEET I.

Y I n a A TTORNE y irs WILLIAM A. SMILEY, F KANSAS ITY, MISSOURI, ASSIGNOR/ TO 'II-IE INNER BRACED SEATING COMPANY, OF KANSAS CITY, MISSOURI, A C0R13RLP;'.TJIOIJk OF MISSOURI.

IVIOVABLE-CI-IAIR DESK.

new and useful Improvements in Movable- Chair Desks; and I do declare the follow-- ing tovbe a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the acconipanyingv drawings,

and to the letters and figures of reference marked thereon, which form a partof this specification. n'

This invention relates to movable seat desks and one of the objects thereof is to i the provision of means for effecting adjustmentslof the desk top, the top being capable of having adjustment vertically and laterally as well as having its angle of inclination varied to suit the requirements of the user. v

The novel features of my inventioin'as well as the advantages thereof, will be apparent by reference to the following description inco'nnection with the accompanying drawings` in which Fig. 1 is a perspective view of a movable chair desk constructed in kaccorda-nce with my invention.

Fig. 2 is a sectional view through the top.

F ig.- 3 is a perspective view of the top support `and adjusting bar, parts being broken away to better illustrate the con-k of the top cover for the top support, show-` ino` the corrugated groove for receiving the frlction element of the detent, and

Fig. 8 is a perspective view of the top support base.

Specification of Letters Patent. Y Pfgfgqgntg Mgy l5 1922 Applicaten filed February 17, 1921. Serial No. 445,849.- i

Referring now to the drawings by numerals of reference:

1A designates a chair of appropriate construction provided with a standard 2,'which may constitute one of the .legs of the chair. Projecting through the standard 2 are seat bolts 3 3, which extend through vertically elongated slots lf-4t 'in a plate'nthe plate being adjusted by vertical movement` and adapted to Ibev secured in an adjusted position through the medium of' the bolts 3 3.

i The plate 5 is fastened to the rear panel 6 of the top support base by autogenous welding or other suitable means. The base is shown as' comprising the panel 6 and two side bars-7 and 8, having forwardly. curved,

arcuate slots 9 and 10 near their forward ends, through which project the crank pins 11 and 12 of a rock shaft 13, bent intermediate its ends to provide a manually operated lever 141-, the shaft 13 being mounted in bearings'l and 16 atthe upper edge of the panel 6. l

Movablewith respect to the baseis an adjustable desk top support comprising the side bars 17 and '18 connected by an intermediate, transverse web 19'and supporting a cover plate 20, which may be autogenously soldered tothe upper edges of the members 17, 18 and 19 if desired.

The' edges of the cover plate 2O extend beyond the'side barsv 17 and 18 and ride in ried by the fixed member 23 of the desk top.`

The angles 21 and l22 are fastened to the member 23 in any well known manner and in the position shown in Fig; 2, provide groovesk for the extendedfedges of the plate 2O so thatthe desk topmember 23 maybe adjusted laterally thereon. The upper face of the .plate 20 iis provided with a complementarygroove or longitudinal recess 241C.` Thel semi-spherical friction 'member '25, spring-urged by the spring 26 and the recessed casing 27, is carried by the member 23; therefore, when the desk top member 23 is moved laterally to any position within the extremes of the groove 24, the friction device 25 will hold it in such position.

The side bars 17 and 18 of the support are provided with arcuate slots 28 and 29, curved in an arc opposite to the curvature of the slots 9 and 10 and the slots 28 and 29 are provided with notches 30 and 31 to receive the crank arms 11 and 12 to hold the desk top support in any adjusted position between extremes.

When the parts are assembled as shown in Figs. 1, 2 and 8 and it is desired to adjust the desk laterally, the member 23 may be moved toward or away from the occupant of the chair 1, the detent 25 riding in the groove 24. Vhen the proper position of the member 23 has been determined, it will be held in such position by the detent 25. Therefore, it will be seen that the member 23 is relatively a fixed member although it may be adjusted laterally.

If it is desired to raise the desk top to a different level, this can be accomplished through the medium of the bolts 3-3 and slots 4 4.

If it is desired to change the angle of inclination of the desk top, the operator will grasp the lever 14 to rock the crank shaft 13 so that the cranks 11 and 12 may be moved out of the notches 3() and 31. Then the desk supporting member consisting of the bars 17 and 18 and connecting web 19 (the whole constituting a U-shaped member), may be rocked on( the rear edge ofthe base consisting of the members 6, 7 and 8 until the forward edge, that is, the edge toward 19 is raised or lowered until the desk top 23 assumes the proper angle. Then the lever 14 will be swung so that the arms 11 and 12 will move into the proper notches 30 and 31. The weight of the desk top then will force the cranks into fixed position with respect to their notches; that is, the weight of the desk top will be sufficient to cause the arms 11 and 12 to ride on the rear edges of the slots 9 and 10, which will force them into their proper notches and retain them in that position. The more weight applied to the top of the desk, the tighter will be the engagement between the members 11 and 12 and the notches 30 and 31. In other words, the arcuate slots 9 and 10 will cam the members 11 and 12 into their notches to securelyy ject matter of a separate application, it will not be described in detail in this application.

From the foregoing it will be apparent that I have provided an efficient, novel and inexpensive means whereby any required adjustment of the desk top may be accomplished without special tools and in a most convenient way.

What I claim and desire to secure by Letters-Patent is:

1. In a desk, a base having sides provided with slots curved in the same direction, a top support hinged thereto and having slots curved in the direction opposite to the curvature of the first named slots, the slots in the `base support having notches, and a rock shaft pivotally mounted on the base and having crank arms extending through the slots and engageable with the notches.

2. In a desk, a base having sides provided with slots curved in the same direction, a top support hinged thereto and having slots curved in the direction opposite to the curvature of the first named slots, the slots in the base support having notches, and a rock shaft, pivotally mounted on the base, having crank arms extending through the slots and engageable with the notches, and having a handle member located within the frame.

3. In a desk, a standard, a support,a base on said support comprising sides and ends and having arcuate slots in the sides, a top on the sides and ends and extendingbeyond the sides of the base, a desktop having angles combining with the top toprovide groovesfto receive the flanges of the top on the base whereby the desk will be laterally slidable with respect thereto, and a detent for holding the top in engagement with the base.

4. A desk comprising a supporting standard, a base member vertically adjustable on the supporting standard, a top support hingedly mounted on the base, a top slidably mounted on the 'top support, guide members on the top and top support, a corrugatedmember on the top support, a spring pressed plunger on the top engageable with the corrugated member to hold the top in ad* justed position.

In testimony whereof I affix my signature.

WILLIAM A. sinner.` 

